CN2666371Y - Electric toothbrush head - Google Patents
Electric toothbrush head Download PDFInfo
- Publication number
- CN2666371Y CN2666371Y CN 200320130046 CN200320130046U CN2666371Y CN 2666371 Y CN2666371 Y CN 2666371Y CN 200320130046 CN200320130046 CN 200320130046 CN 200320130046 U CN200320130046 U CN 200320130046U CN 2666371 Y CN2666371 Y CN 2666371Y
- Authority
- CN
- China
- Prior art keywords
- transmission shaft
- power transmission
- brush
- electric toothbrush
- head
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
An electric toothbrush head comprises a brush rod and a brush tray which is arranged at the end part of the brush rod, a transmission shaft is arranged in the brush rod, a bearing is arranged between the transmission shaft and the brush rod, the shoulder part of the transmission shaft is equipped with a clearance compensation spring, the brush tray movably matches with a straight shaft which is arranged at the end part of the brush rod, the back part of the brush tray is provided with an opening transmission ring, the opening of the opening transmission ring is provided with a swing arm, a long hole which is arranged at one end of the swing arm is sleeved on the straight shaft, a concave ball head which is arranged at the other end of the swing arm is movably matched with an eccentric convex ball head which is arranged at the front end of the transmission shaft. The electric toothbrush head uses a transmission mechanism which consists of the transmission shaft which is provided with the eccentric convex ball head and the swing arm to slide the brush tray to carry out the reciprocating rotary movements with the large swing; in addition, the utility model is provided with the clearance compensation spring, which can ensure the tight fit between the transmission shaft and the brush tray, improve the transmission efficiency, reduce the noise and prolong the service life.
Description
Technical field
This utility model relates to the electric toothbrush parts, specifically is a kind of improved electric toothbrush head that is used for electric toothbrush.
Background technology
The electric toothbrush head manner of execution can be divided into: two kinds of brush circumgyration and brush linear reciprocal movements.And the common type of brush circumgyration drive mechanism has: eccentric shaft transmission, three kinds of structures of gear drive and connecting rod transmission.Tradition eccentric shaft transmission head toothbrushes simple in structure, but pivot angle is less, and its maximum pendulum angle can only reach 27 degree.And be difficult to guarantee closely cooperating between eccentric shaft and the brush dish, transmission efficiency is lower, and noise is bigger, and service life is short.
Summary of the invention
The purpose of this utility model is to overcome the above-mentioned deficiency of existing electric toothbrush head, and a kind of well-formed's electric toothbrush head is provided, and to increase the pivot angle of head toothbrushes, improves the transmission efficiency of head toothbrushes simultaneously, reduces noise, prolongs its service life.
This utility model electric toothbrush head comprises brush holder support 8 and is loaded on the brush dish 1 of brush holder support 8 ends, it is characterized in that: be provided with power transmission shaft 3 in the described brush holder support 8, bearing 2 is installed between power transmission shaft 3 and the brush holder support 8, the shoulder assemblage gap counterbalance spring 4 of power transmission shaft 3, the d-axis 7 of brush dish 1 and brush holder support 8 heads movingly, brush coils 1 rear portion opening transmission ring 11, described opening transmission ring 11 opening parts have rocking bar 6, the slotted hole that rocking bar is 6 one is socketed on the d-axis 7, and the eccentric convex bulb 31 of the spill bulb of rocking bar 6 other ends and power transmission shaft 3 heads movingly.Power transmission shaft rotates, and the opening transmission ring of stirring the brush dish by the serpentine rocking bar that is connected with its eccentric convex bulb makes the brush dish back and forth put on the angular convolution commentaries on classics.
This electric toothbrush head adopts by the power transmission shaft that has eccentric convex bulb and is installed in the drive mechanism that the rocking bar on the d-axis is formed, and stirs the reciprocating rotating motion that the brush dish carries out long arc.
Be provided with clearance compensating spring simultaneously, this clearance compensating spring can be regulated the fit clearance between the eccentric convex bulb of the spill bulb of rocking bar bottom and power transmission shaft front end, can guarantee closely cooperating between power transmission shaft and the brush dish, improves transmission efficiency, reduce noise, increase the service life.
Description of drawings
Fig. 1 is the exemplary embodiments structure chart of this electric toothbrush head;
Fig. 2 is its cut-away view;
Fig. 3 is the structural representation of its brush dish;
Fig. 4 is the structural representation of its serpentine rocking bar;
Fig. 5 is the structural representation of its power transmission shaft;
Fig. 6 a, b, c, d are the kinestate sketch map of power transmission shaft one all brush dishes.
The specific embodiment
Below in conjunction with accompanying drawing this utility model is further specified.
As Fig. 1, shown in 2, this electric toothbrush head mainly comprises brush holder support 8, brush dish 1, power transmission shaft 3 and rocking bar 6, the fixing bearing 2 that cooperates with power transmission shaft 3 of brush holder support 8 inwalls, the shoulder assemblage gap counterbalance spring 4 of power transmission shaft 3, power transmission shaft 3 front ends are provided with eccentric convex bulb 31, the inboard fixedly d-axis 7 in brush holder support 8 ends, brush dish 1 and described d-axis 7 are movingly, brush coils 1 front end knits bristle 13, brush coils 1 rear portion opening transmission ring 11, the lateral surface of opening transmission ring 11 has cannelure 12, fixing pin 9 on the brush bar 8 corresponding with cannelure 12, one end of pin 9 be embedded in the described cannelure 12 and with cannelure 12 movingly, be used to prevent that brush dish 1 from deviating from from brush holder support 8, described opening transmission ring 11 opening parts have serpentine rocking bar 6, and the slotted hole 62 that the serpentine rocking bar is 6 one is socketed on the d-axis 7, the spill bulb 61 of serpentine rocking bar 6 other ends and the eccentric convex bulb 31 of power transmission shaft 3 front ends movingly, realize power transmission shaft 3 and " S " transmission between the shape rocking bar 6.
Clearance compensating spring 4 is between the shoulder 33 and brush holder support 8 of power transmission shaft 3, and an end of clearance compensating spring 4 contacts with the front end face of bearing 2, and the other end of clearance compensating spring 4 contacts with the lower surface of power transmission shaft 3 heads 32.This clearance compensating spring 4 is used for regulating the fit clearance between the eccentric convex bulb 31 of the spill bulb 61 of rocking bar 6 bottoms and power transmission shaft 3 front ends.In the specific embodiment, requiring described gap value is 0.02～0.05mm, guarantees that eccentric convex bulb 31 rotates in spill bulb 61 flexibly, and the too not loosening noise that produces.
In order to reduce motion friction, the pin 9 that described d-axis 7 and being used to locks brush dish 1 all adopts stainless steel material to make, and an end of d-axis 7 is by annular knurl or back-off or combine the mode of injection molded with brush bar 8, realizes d-axis 7 and brush bar 8 tight fits.
Fig. 3 is the structural representation of its brush dish.Brush coils 1 front end knits bristle 13, and brush coils 1 rear portion opening transmission ring 11, and the lateral surface of opening transmission ring 11 has cannelure 12, and axis hole 14 is set in the middle of the brush dish 1, and the inboard fixed d-axis 7 in axis hole 14 and brush holder support 8 ends movingly.
With reference to Fig. 4, the rocking bar 6 of this electric toothbrush head can be serpentine, the slotted hole 62 that 6 one settings of serpentine rocking bar cooperate with d-axis 7, and serpentine rocking bar 6 other ends are provided with spill bulb 61, and serpentine rocking bar 6 middle parts are useful on the arc boss of stirring brush dish 1.
With reference to Fig. 5, the shoulder 33 of power transmission shaft 3 is between the head 32 of the axle body 34 of power transmission shaft and power transmission shaft, and the shoulder 33 of power transmission shaft 3, head 32 and axle body 34 are all cylindrical, the diameter of described shoulder 33 greater than the diameter of axle body 34 less than the diameter of head 32.
The head 32 of power transmission shaft 3 and shoulder 33 are one in the present embodiment, and the axle body 34 of power transmission shaft 3 is plugged in the described shoulder 33, the two tight fit.
In actual applications, the head 32 of power transmission shaft 3, shoulder 33 and axle body 34 also can be as one.
For reducing under heavily loaded situation, because of causing brush to coil 1 rotational angle, 3 distortion of rocking bar 6 or power transmission shaft diminish, the head of described rocking bar 6 and power transmission shaft 3 or power transmission shaft 3 adopts rigidity and bigger polyacetal resin (POM, Polyformaldehyde Resin) or the nylon (Nylon) of intensity to make.
The transmission process of this electric toothbrush head is described with reference to Fig. 6 a-d:
Power transmission shaft 3 rotates counterclockwise, and the opening transmission ring 11 of stirring brush dish 1 by the serpentine rocking bar 6 that is connected with its eccentric convex bulb 31 makes the brush dish back and forth put on the angular convolution commentaries on classics.
Shown in Fig. 6 a, when the eccentric convex bulb 31 of power transmission shaft 3 front ends forwarded limit on the right-right-hand limit point to, serpentine rocking bar 6 drove brush dish 1 and returns back to the maximum pendulum angle place left; Power transmission shaft 3 continues to rotate counterclockwise, and shown in Fig. 6 b, when described eccentric convex bulb 31 forwards limit superior point to (power transmission shaft 3 rotates counterclockwise 90 degree), " S " rocking bar 6 drives brush dish 1 and returns back to the centre position to the right.
Power transmission shaft 3 continues to rotate counterclockwise, and as Fig. 6 c, when described eccentric convex bulb 31 forwarded limit on the left point to, serpentine rocking bar 6 drove brush dish 1 and continues to return back to the maximum pendulum angle place to the right; Power transmission shaft 3 continues to rotate counterclockwise, and shown in Fig. 6 d, when described eccentric convex bulb 31 forwarded limit inferior point to, serpentine rocking bar 6 drove brush dish 1 and returns back to the centre position left.Power transmission shaft 3 continues to rotate counterclockwise, by " S " shape rocking bar 6 makes brush dish 1 carry out repeatedly that above-mentioned back and forth to put on angular convolution transhipment moving.
Claims (8)
1, a kind of electric toothbrush head, comprise brush holder support (8) and be loaded on the brush dish (1) of brush holder support (8) end, it is characterized in that: be provided with power transmission shaft (3) in the described brush holder support (8), between power transmission shaft (3) and the brush holder support (8) bearing (2) is installed, the shoulder assemblage gap counterbalance spring (4) of power transmission shaft (3), the d-axis (7) of brush dish (1) and brush holder support (8) head movingly, there is opening transmission ring (11) at brush dish (1) rear portion, described opening transmission ring (11) opening part has rocking bar (6), the slotted hole that rocking bar is (6) one is socketed on the described d-axis (7), and the eccentric convex bulb (31) of the spill bulb of rocking bar (6) other end and power transmission shaft (3) head movingly.
2, electric toothbrush head according to claim 1, it is characterized in that: the shoulder (33) of described power transmission shaft (3) is positioned between its axle body (34) and head (32), the diameter of described shoulder (33) greater than the diameter of described axle body (34) less than the diameter of described head (32).
3, electric toothbrush head according to claim 2 is characterized in that: the head (32) and the shoulder (33) of described power transmission shaft (3) are one, and the axle body (34) of power transmission shaft (3) is plugged in the described shoulder (33).
4, electric toothbrush head according to claim 2 is characterized in that: the head (32) of described power transmission shaft (3), shoulder (33) and axle body (34) are one.
5, electric toothbrush head according to claim 1 is characterized in that: described rocking bar (6) is serpentine, and (6) one of rocking bars have slotted hole (62), and the other end is provided with spill bulb (61).
6, electric toothbrush head according to claim 1 is characterized in that: an end of described clearance compensating spring (4) contacts with the front end face of bearing (2), and the other end of clearance compensating spring (4) contacts with the lower surface of power transmission shaft (3) head (32).
7, electric toothbrush head according to claim 1 is characterized in that: the d-axis (7) of described brush holder support (8) head is the rustless steel d-axis.
8, electric toothbrush head according to claim 1 is characterized in that: the head of described rocking bar (6) and power transmission shaft (3) or power transmission shaft (3) is that polyacetal resin or nylon material are made.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320130046 CN2666371Y (en) | 2003-12-22 | 2003-12-22 | Electric toothbrush head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320130046 CN2666371Y (en) | 2003-12-22 | 2003-12-22 | Electric toothbrush head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2666371Y true CN2666371Y (en) | 2004-12-29 |
Family
ID=34350046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320130046 Expired - Lifetime CN2666371Y (en) | 2003-12-22 | 2003-12-22 | Electric toothbrush head |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2666371Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102665603A (en) * | 2009-12-23 | 2012-09-12 | 皇家飞利浦电子股份有限公司 | Mechanically driven resonant drive train for a power toothbrush |
-
2003
- 2003-12-22 CN CN 200320130046 patent/CN2666371Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102665603A (en) * | 2009-12-23 | 2012-09-12 | 皇家飞利浦电子股份有限公司 | Mechanically driven resonant drive train for a power toothbrush |
| CN102665603B (en) * | 2009-12-23 | 2015-05-20 | 皇家飞利浦电子股份有限公司 | Mechanically driven resonant drive train for a power toothbrush |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131222 Granted publication date: 20041229 |